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PRONOM
PRONOM (Public Record Office and Chữ Nôm, Nôm 喃) is a World Wide Web, web-based technical registry to support digital preservation services, developed by The National Archives (UK), The National Archives of the United Kingdom. PRONOM was the first and remains, to date, the only operational public file format registry in the world, although the "Magic File" repository of the File (command), File Command has served this role in a less formal capacity for two decades. Other projects to develop technical registries, including the UK Digital Curation Centre's Representation Information Registry, and the Global Digital Format Registry project at Harvard University, are now in progress. PRONOM's origins lie in a requirement to have access to reliable technical information about the electronic records held by The National Archives. By definition, electronic records are not inherently human-readable - file formats encode information into a form which can only be processed and rendere ...
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Adrian Brown (archivist)
Adrian Brown (born 1969) is a British archivist specializing in digital records preservation. He led development of the widely used PRONOM file format registry and associated DROID software tool. He is the author of ''Practical Digital Preservation: A How-To Guide for Organizations of Any Size'' (2013). Career Adrian Brown was born in 1969 in London, England. He attended Durham University, and in 1991 graduated with a BA in Medieval Literature. He became a professional archaeological excavator, and participated in several projects at sites in the United Kingdom. In 1994 he joined the English Heritage Centre for Archaeology in Portsmouth as an assistant records manager. He was promoted to information manager and then to head of information management and collections. He became involved in the field of long-term digital preservation, and in 2000 published a digital archiving strategy for English Heritage, which he used as the basis for developing the digital archiving infrastructure ...
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File Format
A file format is a standard way that information is encoded for storage in a computer file. It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary or free. Some file formats are designed for very particular types of data: PNG files, for example, store bitmapped images using lossless data compression. Other file formats, however, are designed for storage of several different types of data: the Ogg format can act as a container for different types of multimedia including any combination of audio and video, with or without text (such as subtitles), and metadata. A text file can contain any stream of characters, including possible control characters, and is encoded in one of various character encoding schemes. Some file formats, such as HTML, scalable vector graphics, and the source code of computer software are text files with defined syntaxes that allow them to be used for specific purposes. Specifications ...
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File Format
A file format is a standard way that information is encoded for storage in a computer file. It specifies how bits are used to encode information in a digital storage medium. File formats may be either proprietary or free. Some file formats are designed for very particular types of data: PNG files, for example, store bitmapped images using lossless data compression. Other file formats, however, are designed for storage of several different types of data: the Ogg format can act as a container for different types of multimedia including any combination of audio and video, with or without text (such as subtitles), and metadata. A text file can contain any stream of characters, including possible control characters, and is encoded in one of various character encoding schemes. Some file formats, such as HTML, scalable vector graphics, and the source code of computer software are text files with defined syntaxes that allow them to be used for specific purposes. Specifications ...
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Digital Obsolescence
Digital obsolescence is the risk of data loss because of inabilities to access digital assets, due to the hardware or software required for information retrieval being repeatedly replaced by newer devices and systems, resulting in increasingly incompatible formats."Obsolescence – a key challenge in the digital age". National Archives of Australia. Retrieved 17 December 2021 from https://web.archive.org/web/20140317184658/http://www.naa.gov.au/records-management/agency/preserve/e-preservation/obsolescence.aspx While the threat of an eventual "digital dark age" (where large swaths of important cultural and intellectual information stored on archaic formats becomes irretrievably lost) was initially met with little concern until the 1990s, modern digital preservation efforts in the information and archival fields have implemented protocols and strategies such as data migration and technical audits, while the salvage and emulation of antiquated hardware and software address digital ob ...
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Digital Preservation Award
The Digital Preservation Award is an international award sponsored by the Digital Preservation Coalition. The award 'recognises the many new initiatives being undertaken in the challenging field of digital preservationIt was inaugurated in 2004. It was initially presented as part of the Institute of ConservationConservation Awards. Since 2012 the prize is presented independently. The prize includes a trophy and a cheque. Awards ceremonies have taken place at the British Library, the British Museum and the Wellcome Trust. Winners and shortlisted entries 2004 Winner * The Digital Archive: The National Archives of the United Kingdom Shortlisted * The CAMiLEON Project: University of Leeds & University of Michigan (Special Commendation) * JISC Continuing Access and Digital Preservation Strategy: Jisc * Preservation Metadata Extraction Tool: National Library of New Zealand * Wellcome Library/JISC Web Archiving Project: Wellcome Library & Jisc 2005 Winner * PREMIS (Preservatio ...
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The National Archives (UK)
, type = Non-ministerial department , seal = , nativename = , logo = Logo_of_The_National_Archives_of_the_United_Kingdom.svg , logo_width = 150px , logo_caption = , formed = , preceding1 = , dissolved = , superseding = , jurisdiction = England and Wales, HM Government , headquarters = Kew, Richmond, Greater London TW9 4DU , region_code = GB , coordinates = , employees = 679 , budget = £43.9 million (2009–2010) , minister1_name = Michelle Donelan , minister1_pfo = Secretary of State for Digital, Culture, Media and Sport , minister2_name = TBC , minister2_pfo = Parliamentary Under Secretary of State , chief1_name = Jeff James , chief1_position = Chief Executive and Keeper of the Public Records , chief2_name = , chief2_position = , chief3_name = , chief3_position = , chief4_name = , chief4_position = , chief5_name = , chief5_position = , agency_type = , chief6_name = , chief6_position = , chief7_name = , chief7_position = , ...
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MIME
Multipurpose Internet Mail Extensions (MIME) is an Internet standard that extends the format of email messages to support text in character sets other than ASCII, as well as attachments of audio, video, images, and application programs. Message bodies may consist of multiple parts, and header information may be specified in non-ASCII character sets. Email messages with MIME formatting are typically transmitted with standard protocols, such as the Simple Mail Transfer Protocol (SMTP), the Post Office Protocol (POP), and the Internet Message Access Protocol (IMAP). The MIME standard is specified in a series of requests for comments: , , , , and . The integration with SMTP email is specified in and . Although the MIME formalism was designed mainly for SMTP, its content types are also important in other communication protocols. In the HyperText Transfer Protocol (HTTP) for the World Wide Web, servers insert a MIME header field at the beginning of any Web transmission. Clients ...
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Internet Assigned Numbers Authority
The Internet Assigned Numbers Authority (IANA) is a standards organization that oversees global IP address allocation, autonomous system number allocation, root zone management in the Domain Name System (DNS), media types, and other Internet Protocol-related symbols and Internet numbers. Currently it is a function of ICANN, a nonprofit private American corporation established in 1998 primarily for this purpose under a United States Department of Commerce contract. ICANN managed IANA directly from 1998 through 2016, when it was transferred to Public Technical Identifiers (PTI), an affiliate of ICANN that operates IANA today. Before it, IANA was administered principally by Jon Postel at the Information Sciences Institute (ISI) of the University of Southern California (USC) situated at Marina Del Rey (Los Angeles), under a contract USC/ISI had with the United States Department of Defense. In addition, five regional Internet registries delegate number resources to their custo ...
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Comma-separated Values
A comma-separated values (CSV) file is a delimited text file that uses a comma to separate values. Each line of the file is a data record. Each record consists of one or more fields, separated by commas. The use of the comma as a field separator is the source of the name for this file format. A CSV file typically stores tabular data (numbers and text) in plain text, in which case each line will have the same number of fields. The CSV file format is not fully standardized. Separating fields with commas is the foundation, but commas in the data or embedded line breaks have to be handled specially. Some implementations disallow such content while others surround the field with quotation marks, which yet again creates the need for escaping if quotation marks are present in the data. The term "CSV" also denotes several closely-related delimiter-separated formats that use other field delimiters such as semicolons. These include tab-separated values and space-separated values. A d ...
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Resource Fork
The resource fork is a fork (file system), fork or section of a computer file, file on Apple Inc., Apple's classic Mac OS operating system, which was also carried over to the modern macOS for compatibility, used to store structured data along with the unstructured data stored within the data fork. A resource fork stores information in a specific form, containing details such as icon bitmaps, the shapes of windows, definitions of menus and their contents, and application code (machine code). For example, a word processing file might store its text in the data fork, while storing any embedded images in the same file's resource fork. The resource fork is used mostly by executables, but every file is able to have a resource fork. The Macintosh file system Originally conceived and implemented by programmer Bruce Horn, the resource fork was used for three purposes with Hierarchical File System, Macintosh file system: * It was used to store all graphical data on disk until it was neede ...
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Data Compression
In information theory, data compression, source coding, or bit-rate reduction is the process of encoding information using fewer bits than the original representation. Any particular compression is either lossy or lossless. Lossless compression reduces bits by identifying and eliminating statistical redundancy. No information is lost in lossless compression. Lossy compression reduces bits by removing unnecessary or less important information. Typically, a device that performs data compression is referred to as an encoder, and one that performs the reversal of the process (decompression) as a decoder. The process of reducing the size of a data file is often referred to as data compression. In the context of data transmission, it is called source coding; encoding done at the source of the data before it is stored or transmitted. Source coding should not be confused with channel coding, for error detection and correction or line coding, the means for mapping data onto a signal. ...
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Apple Macintosh
The Mac (known as Macintosh until 1999) is a family of personal computers designed and marketed by Apple Inc. Macs are known for their ease of use and minimalist designs, and are popular among students, creative professionals, and software engineers. The current lineup includes the MacBook Air and MacBook Pro laptops, as well as the iMac, Mac Mini, Mac Studio and Mac Pro desktops. Macs run the macOS operating system. The first Mac was released in 1984, and was advertised with the highly-acclaimed "1984" ad. After a period of initial success, the Mac languished in the 1990s, until co-founder Steve Jobs returned to Apple in 1997. Jobs oversaw the release of many successful products, unveiled the modern Mac OS X, completed the 2005-06 Intel transition, and brought features from the iPhone back to the Mac. During Tim Cook's tenure as CEO, the Mac underwent a period of neglect, but was later reinvigorated with the introduction of popular high-end Macs and the ongoing Apple s ...
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